Network:
1--> it supports everything, wifi hotspot,bluetooth 3.0 A-GPS. I installed Sygic to check the GPS signal and working and it worked flawlessly.
2-> 2 sim support - one for 3g and other for 2g. Micromax has done some good software upgrade to recognize the sims from which u dial or send message.Trust me the interface for it is not the one if any 1 thinks if its a china phone.

Qwerty Keyboard:
keyboard is ok, not like the one on BB, but it ofcourse takes time to get use to it. Both the android keyboard and physical keyboard can be used as the big screen makes it more convenient.

Battery:
1300 Mah-- its not that good not bad either. With a full charge and whole day connected to GPRS and sometimes WIFI. it last for one full day. I have HTC one X , 1800mah battery and it last for same either.

Sound Quality;
Ok from the supplied in-earphones and good if you use a nice headphones. It also has a RDS radio which works good.

pros
elegant design, good performance, video call, sound clarity,
cons,
low battery bacup, set is getting heat while making call
as far as battery all android is having same problem.
i'll write more after a week